Re: Mirroring the database?

Ehhh, use dual-ported RAID disks? (Well, tri-port in your case, but maybe A and B machines are enough. You still have a (small) single point of failure, but you probably have that anyhow (network switch?). You'll need some way of brining PostgreSQL up on B when A dies, but that could be a simple script. Reconnect would of course be manual from the point of the client.).

Or buy Oracle.

Replication is at the top of the TODO list: http://www.uk.postgresql.org/docs/todo.html

Allan.

PS:
Maybe SQLB does some of what you want? http://sourceforge.net/projects/sqlb/ [The documentation is a little opaque...I'm not quite sure what it does, exactly. Anybody want to comment?]

Raymond Chui wrote:

> Does the latest PostgreSQL 7.1.2 support database mirroring?
>
> I have machine A, B and C, they all have the same database and tables.
> Machine A is the operational machine, machine B and C are backup.
>
> If users do INSERT, UPDATE and DELETE in machine A, I want have the
> same SQL statements in machine B and C.
>
> 1. I can do pg_dump or COPY every hour.
> 2. I can use PerlDBI or JDBC open multiple connections for each SQL
> statement.
> 3. But I prefer if the system auto mirroring the database, then I can do
> nothing.
> All I need is set the auto mirroring configure.
>
> Please tell me how to do in 3. above. Thank you in advance!